I'm rather familiar with the L. Signal upgrades wont create a large improvement - it is already a fully automated line ( there's a sign at the end of every plat

I'm rather familiar with the L. Signal upgrades wont create a large improvement - it is already a fully automated line ( there's a sign at the end of every platform that spells out that the trains of the L are under automated traffic control ). It was just designed in the bone-headed way - just look at the 8th ave termination point or realize where the switches are in Manhattan and Brooklyn.